javascript - opening a window on second monitor (screen) with asp.net

Question

I want to open a window popup on second monitor automatically. I try to open it with javascript but the popup recline to my first screen's right top. When I use mouse it can fit on second screen but I dont want to use mouse, I want to do it automatically my javascript code:

window.open("Pop.aspx", "Pop.aspx", "width=10,height=10,screenX=1800,screenY=0");

I change screenX property many times but it didn't work.

Any Idea?